bsd/netinet/udp_var.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23 /*
  24  * Copyright (c) 1982, 1986, 1989, 1993
  25  *      The Regents of the University of California.  All rights reserved.
  26  *
  27  * Redistribution and use in source and binary forms, with or without
  28  * modification, are permitted provided that the following conditions
  29  * are met:
  30  * 1. Redistributions of source code must retain the above copyright
  31  *    notice, this list of conditions and the following disclaimer.
  32  * 2. Redistributions in binary form must reproduce the above copyright
  33  *    notice, this list of conditions and the following disclaimer in the
  34  *    documentation and/or other materials provided with the distribution.
  35  * 3. All advertising materials mentioning features or use of this software
  36  *    must display the following acknowledgement:
  37  *      This product includes software developed by the University of
  38  *      California, Berkeley and its contributors.
  39  * 4. Neither the name of the University nor the names of its contributors
  40  *    may be used to endorse or promote products derived from this software
  41  *    without specific prior written permission.
  42  *
  43  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  44  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  45  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  46  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  47  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  48  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  49  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  50  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  51  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  52  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  53  * SUCH DAMAGE.
  54  *
  55  *      @(#)udp_var.h   8.1 (Berkeley) 6/10/93
  56  */
  57
  58 #ifndef _NETINET_UDP_VAR_H_
  59 #define _NETINET_UDP_VAR_H_
  60 #include <sys/appleapiopts.h>
  61
  62 #include <sys/sysctl.h>
  63
  64 /*
  65  * UDP kernel structures and variables.
  66  */
  67 struct  udpiphdr {
  68         struct  ipovly ui_i;            /* overlaid ip structure */
  69         struct  udphdr ui_u;            /* udp header */
  70 };
  71 #define ui_x1           ui_i.ih_x1
  72 #define ui_pr           ui_i.ih_pr
  73 #define ui_len          ui_i.ih_len
  74 #define ui_src          ui_i.ih_src
  75 #define ui_dst          ui_i.ih_dst
  76 #define ui_sport        ui_u.uh_sport
  77 #define ui_dport        ui_u.uh_dport
  78 #define ui_ulen         ui_u.uh_ulen
  79 #define ui_sum          ui_u.uh_sum
  80 #define ui_next         ui_i.ih_next
  81 #define ui_prev         ui_i.ih_prev
  82
  83 struct  udpstat {
  84                                 /* input statistics: */
  85         u_long  udps_ipackets;          /* total input packets */
  86         u_long  udps_hdrops;            /* packet shorter than header */
  87         u_long  udps_badsum;            /* checksum error */
  88         u_long  udps_badlen;            /* data length larger than packet */
  89         u_long  udps_noport;            /* no socket on port */
  90         u_long  udps_noportbcast;       /* of above, arrived as broadcast */
  91         u_long  udps_fullsock;          /* not delivered, input socket full */
  92         u_long  udpps_pcbcachemiss;     /* input packets missing pcb cache */
  93         u_long  udpps_pcbhashmiss;      /* input packets not for hashed pcb */
  94                                 /* output statistics: */
  95         u_long  udps_opackets;          /* total output packets */
  96         u_long  udps_fastout;           /* output packets on fast path */
  97 #ifndef __APPLE__
  98         u_long  udps_nosum;             /* no checksum */
  99         /* of no socket on port, arrived as multicast */
 100         u_long  udps_noportmcast;
 101 #endif
 102 };
 103
 104 /*
 105  * Names for UDP sysctl objects
 106  */
 107 #define UDPCTL_CHECKSUM         1       /* checksum UDP packets */
 108 #define UDPCTL_STATS            2       /* statistics (read-only) */
 109 #define UDPCTL_MAXDGRAM         3       /* max datagram size */
 110 #define UDPCTL_RECVSPACE        4       /* default receive buffer space */
 111 #define UDPCTL_PCBLIST          5       /* list of PCBs for UDP sockets */
 112 #define UDPCTL_MAXID            6
 113
 114 #ifdef KERNEL_PRIVATE
 115 #define UDPCTL_NAMES { \
 116         { 0, 0 }, \
 117         { "checksum", CTLTYPE_INT }, \
 118         { "stats", CTLTYPE_STRUCT }, \
 119         { "maxdgram", CTLTYPE_INT }, \
 120         { "recvspace", CTLTYPE_INT }, \
 121         { "pcblist", CTLTYPE_STRUCT }, \
 122 }
 123
 124 SYSCTL_DECL(_net_inet_udp);
 125
 126 extern struct   pr_usrreqs udp_usrreqs;
 127 extern struct   inpcbhead udb;
 128 extern struct   inpcbinfo udbinfo;
 129 extern u_long   udp_sendspace;
 130 extern u_long   udp_recvspace;
 131 extern struct   udpstat udpstat;
 132 extern int      log_in_vain;
 133
 134 void    udp_ctlinput(int, struct sockaddr *, void *);
 135 void    udp_init(void);
 136 void    udp_input(struct mbuf *, int);
 137
 138 void    udp_notify(struct inpcb *inp, int errno);
 139 int     udp_shutdown(struct socket *so);
 140 int     udp_lock (struct socket *, int, int);
 141 int     udp_unlock (struct socket *, int, int);
 142 void    udp_slowtimo (void);
 143 #ifdef _KERN_LOCKS_H_
 144 lck_mtx_t *     udp_getlock (struct socket *, int);
 145 #else
 146 void *  udp_getlock (struct socket *, int);
 147 #endif
 148
 149 #endif KERNEL_PRIVATE
 150 #endif _NETINET_UDP_VAR_H_